Which of the following represents the correct order of increasing $p K_{a}$ values of the given acids?
$H C l O_{4} < H N O_{3} < H_{2} C O_{3} < B (O H)_{3}$
$H N O_{3} < H C l O_{4} < B (O H)_{3} < H_{2} C O_{3}$
$B (O H)_{3} < H_{2} C O_{3} < H C l O_{4} < H N O_{3}$
$H C l O_{4} < H N O_{3} < B (O H)_{3} < H_{2} C O_{3}$

Question

Which of the following represents the correct order of increasing $p K_{a}$ values of the given acids?
$H C l O_{4} < H N O_{3} < H_{2} C O_{3} < B (O H)_{3}$
$H N O_{3} < H C l O_{4} < B (O H)_{3} < H_{2} C O_{3}$
$B (O H)_{3} < H_{2} C O_{3} < H C l O_{4} < H N O_{3}$
$H C l O_{4} < H N O_{3} < B (O H)_{3} < H_{2} C O_{3}$

Toppr Admin · Accepted Answer

As we know-acidic strength of acids asHClO4-gt-HNO3-gt-H2CO3-gt-B-OH-3-xA0- -7 -xA0- -xA0- -xA0- -xA0- -xA0-5 -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -4and as we know-more stronger acid have lower value of pKa so-xA0-pKa order-xA0-HClO4-lt-HNO3-lt-H2CO3-lt-B-OH-3

Which of the following represents the correct order of increasing pKa values of the given acids?HClO4<HNO3<H2CO3<B(OH)3HNO3<HClO4<B(OH)3<H2CO3B(OH)3<H2CO3<HClO4<HNO3HClO4<HNO3<B(OH)3<H2CO3

As we know,acidic strength of acids asHClO4>HNO3>H2CO3>B(OH)3 +7 +5 +4and as we know,more stronger acid have lower value of pKa so pKa order HClO4<HNO3<H2CO3<B(OH)3

As we know,
acidic strength of acids as
$H C l O_{4} > H N O_{3} > H_{2} C O_{3} > B (O H)_{3}$
+7 +5 +4
and as we know,
more stronger acid have lower value of pKa so
$p K_{a}$ order
$H C l O_{4} < H N O_{3} < H_{2} C O_{3} < B (O H)_{3}$